I’d say the same. Google dorks work much better than DDG’s filters for site-specific stuff, and generally for things like "search term" but for general searches DDG seems pretty similar.

The only things I’ve also had worse performance from DDG on compared to Google (in very minimal ways) has been:

• Highly specific searches (e.g. searching for a diagram of the dimensions of common connector types, DDG shows side-by-sides of connectors, Google does that but also with more diagrams that have dimensions in them)
• Context but not keyword based searches (e.g. “thing that has x y and z characteristics” returns more relevant results in Google than DDG, very marginally)

And of course, there’s always the !s bang to run a search through Startpage (which uses Google) if I’m not getting enough detail.